package com.itheima.week4.binary_tree;

public
class TreeNode {
    public int val;
    public TreeNode left;
    public TreeNode right;
    
    public TreeNode() {
    }
    
    public TreeNode(int val) {
        this.val = val;
    }
    
    TreeNode(int val, TreeNode left, TreeNode right) {
        this.val = val;
        this.left = left;
        this.right = right;
    }
    
    // @Override
    // public String toString() {
    //     return "TreeNode{" +
    //             "val=" + val +
    //             '}';
    // }
    
    @Override
    public String toString() {
        return "TreeNode{" +
                "val=" + val +
                ", left=" + left +
                ", right=" + right +
                '}';
    }
}
    
